CN103727689A - Windproof device and windproof method for effectively reducing wind resistance of heliostat field - Google Patents
Windproof device and windproof method for effectively reducing wind resistance of heliostat field Download PDFInfo
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- CN103727689A CN103727689A CN201310728719.2A CN201310728719A CN103727689A CN 103727689 A CN103727689 A CN 103727689A CN 201310728719 A CN201310728719 A CN 201310728719A CN 103727689 A CN103727689 A CN 103727689A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a windproof device for effectively reducing wind resistance of a heliostat field. The windproof device encircles the periphery of the heliostat field and comprises a plurality of upright columns, a latticed support and at least one layer of windproof dust suppression net. The upright columns are fixedly connected with the latticed support and are perpendicularly fixed onto the ground, the latticed support is perpendicularly supported on the ground by the upright columns, and the windproof dust suppression nets fixedly cover the latticed support. The invention further relates to a windproof method for effectively reducing the wind resistance of the heliostat field. The windproof method includes changing the heights of latticed supports at a plurality of position points, and respectively measuring wind resistance resultant moment M born by heliostats at the edges of the heliostat field after windproof devices are arranged at the position points; equivalently changing the heights of the latticed supports, repeatedly carrying out the process and measuring the wind resistance resultant moment M born by the heliostats at the edges of the heliostat field; acquiring the optimal heights of the latticed supports and the optimal distances from the windproof devices to the heliostats at the edges of the heliostat field by means of comparison.
Description
Technical field
The present invention relates to a kind of wind-proof device and method, relate in particular to and a kind ofly can effectively reduce anti-wind-proof device and the method thereof of solar energy heliostat mirror field wind.
Background technology
Tower type solar energy thermal power generation technology is a kind of advanced, efficient generation technology, because it can provide reliably, green clean alternative energy source is paid close attention to by people gradually relatively efficiently.Compared with abroad, the solar energy thermal-power-generating technology of China is in a backward condition always, but in recent years, domestic many enterprises and scientific research institution have strengthened the research of this respect.At present, greatly develop in the important research task that tower type solar energy thermal power generation technology has been put into national medium-to long-range program for scientific and technological development.
Heliostat is very important equipment in energy conversion process in solar heat power generation system.In heliostat field, conventionally intensively arranged thousands of heliostats, and each heliostat is comprised of minute surface, mirror holder, tracking drive mechanism and control system thereof etc., for following the tracks of, receive and reflected sunlight enters and is positioned at the heat collector that receives top of tower.Wherein drive disk assembly is guaranteeing that minute surface optically focused positioning precision is high, under the large prerequisite of mechanical strength, keep heliostat stable, general drive disk assembly has accounted for greatly 50% of its totle drilling cost in heliostat cost, is the higher principal element of unit price cost that directly causes heliostat.The main problem existing in the actual heliostat field building up at present:
The first, heliostat field does not have the device of wind-shielding function, causes heliostat steel using amount to increase, and the rigidity of heliostat drive disk assembly and mirror holder is required to improve, and has increased the manufacturing cost of heliostat simultaneously.
Second, general heliostat field is all built the remote area in desert, plateau, do not have the dust on heliostat surface in the mirror field of wind-proof device more, wind-engaging sand shadow rings larger, not only make the stability of mirror field edge heliostat reduce, and therefore the energy of heliostat flare also can reduce, this will cause heliostat to shorten service life, and the raising of heliostat cleaning frequency, the maintenance cost of increase heliostat.
The 3rd, patent WO2012014153A2 discloses a kind of solar tracking system of controlling and reduces the anti-method of wind, by utilization, the edge heliostat in mirror field is adjusted to the state of keeping out the wind and realizes the anti-object of reduction whole mirror field wind.Described method not only windproof cost input is excessive, be unfavorable for Jing Chang operation, and protection effect is also undesirable, is unfavorable for promoting the use of.
In a word, along with the process of continuing to optimize of heliostat Jing Chang, arranging of the wind-proof device to heliostat is imperative, and therefore the invention of a kind of low cost, high performance wind-proof device is significant for addressing the above problem.
Summary of the invention
The first object of the present invention is to provide a kind of can effectively reduce the anti-wind-proof device of mirror field wind, can effectively reduce the load that bring because of wind-force on heliostat surface, reduces drive disk assembly cost, thereby reduces the cost of heliostat and heliostat field.
The second object of the present invention is to provide a kind of can effectively reduce the anti-windproof method of mirror field wind, by selection, wind-proof device and the distance of heliostat Jing Chang and the height of wind-proof device are set, reduce further the load that bring because of wind-force on heliostat surface, reduce drive disk assembly cost, reduce the cost of heliostat and heliostat field.
In order to realize above-mentioned the first object, the invention provides and a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, described wind-proof device is around being arranged on around a heliostat Jing Chang, comprise some columns, latticed support and wind-proof dust-suppression net, wherein, described some columns are fixedly connected with described latticed support, and are vertically fixed on ground, described latticed support vertical is supported on the ground, on described latticed support, be fixedly coated with at least wind-proof dust-suppression net of one deck.
As preferably, the percent opening of described wind-proof dust-suppression net is 20%-40%.
As preferably, the height of described column exceeds described latticed support 10cm.
Preferably, described wind-proof device adopts two-layer wind-proof dust-suppression net.
As preferably, set the height of described latticed support and described wind-proof device to the distance of mirror field edge heliostat, make heliostat in described heliostat mirror field be subject to the anti-resultant moment of wind within the scope of drive disk assembly carrying.
In order to realize above-mentioned the second object, the present invention also provides a kind of can effectively reduce the anti-windproof method of mirror field wind, utilizes above-mentioned a kind of anti-wind-proof device of mirror field wind that can effectively reduce to carry out windproofly, comprises the following steps:
S1: the heliostat area of default described heliostat Jing Chang is height H 0, the mean wind speed V of S, described latticed support, at described wind-proof device, on the distance L direction of mirror field edge heliostat, equally spaced obtain some location points, measure respectively on described some location points and arrange after described wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears;
S2: change the height of described latticed support of described some location points to H1, measure respectively on described some location points and arrange after described wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears;
S3: equivalent changes the height of described latticed support and repeats the method in S2, measuring successively wind-proof device height is H2=2H1-H0, H3=3H1-2H0, H4=4H1-3H0 ... time, the anti-resultant moment M of wind that mirror field edge heliostat bears is set after described wind-proof device on described some location points;
S4: by the anti-resultant moment M of wind that S1-S3 is obtained, relatively draw the optimal height of described latticed support and the described wind-proof device optimal distance to mirror field edge heliostat.
As preferably, in S1, also comprise, when the height that draws described latticed support is H0, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
As preferably, in S2, also comprise, when the height that draws described latticed support is H1, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
As preferably, in S3, also comprise, show that successively wind-proof device height is H2=2H1-H0, H3=3H1-2H0, H4=4H1-3H0 ... time, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
As preferably, in S4, also comprise:
S41 obtains the three-dimensional resultant moment dot chart of a width by the dot chart matching that S1-S3 is obtained;
S42 obtains the anti-resultant moment M of wind that described mirror field edge heliostat the bears part dot chart within the scope of drive disk assembly carrying in described three-dimensional resultant moment dot chart;
S43 being according to analyzing land utilization ratio, windbreak construction cost and cleaning vehicle channel width, finds out the optimal height of described latticed support and the described wind-proof device optimal distance to mirror field edge heliostat in described part dot chart.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
(1) a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, in mirror field, periphery is built wind-proof device, can effectively reduce the load that bring because of wind-force on heliostat surface, reduce drive disk assembly cost, thereby reduce the cost of heliostat and heliostat field, guarantee that minute surface optically focused positioning precision is high, heliostat is stable simultaneously;
(2) a kind ofly can effectively reduce the anti-windproof method of mirror field wind, by selection, wind-proof device and the distance of heliostat Jing Chang and the height of wind-proof device are set, in mirror field, periphery is built wind-proof device, can reduce further the load that bring because of wind-force on heliostat surface, reduce drive disk assembly cost, thereby the cost that reduces heliostat and heliostat field guarantees that minute surface optically focused positioning precision is high simultaneously, and heliostat is stable;
(3) can effectively reduce mirror field wind anti-wind-proof device and a method thereof, can prevent flying upward of sand and dust, reduce the heliostat surface dirt causing because of dust storm, thereby reduce the wash number of heliostat, reduce the water consumption producing because cleaning minute surface.
Accompanying drawing explanation
Fig. 1 is the layout that arranges in the embodiment of the present invention one;
Fig. 2 is heliostat elevation angle and azimuthal position in the embodiment of the present invention one;
Fig. 3 is the structural representation of square net in the embodiment of the present invention one;
Fig. 4 is the structural representation of parallelogram mesh in the embodiment of the present invention one;
Fig. 5 is the structural representation of hexagonal mesh in the embodiment of the present invention one;
Fig. 6 is the height of the embodiment of the present invention two latticed supports while being 2.5m, the dot matrix broken line graph that the anti-resultant moment M of wind changes with the distance L to mirror field edge heliostat;
Fig. 7 is the height of the embodiment of the present invention two latticed supports while being 3.0m, the dot matrix broken line graph that the anti-resultant moment M of wind changes with the distance L to mirror field edge heliostat;
Fig. 8 is the height of the embodiment of the present invention two latticed supports while being 3.5m, the dot matrix broken line graph that the anti-resultant moment M of wind changes with the distance L to mirror field edge heliostat;
Fig. 9 is the height of the embodiment of the present invention two latticed supports while being 4.0m, the dot matrix broken line graph that the anti-resultant moment M of wind changes with the distance L to mirror field edge heliostat;
Figure 10 is three-dimensional resultant moment dot matrix surface chart in the embodiment of the present invention two;
Figure 11 is a kind of flow chart that can effectively reduce the anti-windproof method of mirror field wind provided by the invention.
The specific embodiment
Further illustrate the present invention with specific embodiment with reference to the accompanying drawings.
Referring to the accompanying drawing that goes out the embodiment of the present invention, the present invention below will be described in more detail.But the present invention can be with many multi-form realizations, and should not be construed as the restriction of the embodiment being subject in this proposition.On the contrary, it is abundant and complete open in order to reach proposing these embodiment, and makes those skilled in the art understand scope of the present invention completely.
Embodiment mono-
Accompanying drawing 3-5 is a kind of structural representation that can effectively reduce the anti-wind-proof device of mirror field wind of the present invention, below describes in detail provided by the inventionly a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind.
Fig. 1 is that heliostat wind-proof device arranges layout in mirror field described in the embodiment of the present invention, heliostat 2 in mirror field is collected solar energy by sunlight reflection to heat dump 1, in environment, wind-force is larger on the drive disk assembly impact of heliostat, the present invention designs and a kind ofly can effectively reduce the anti-wind-proof device 3 of mirror field wind, by wind-proof device is set one near mirror field edge, stop that mirror encloses wind-force outside the venue, improve heliostat stability, reduce heliostat manufacturing cost.
Wind-proof device is looped around around a heliostat Jing Chang, comprise some columns, latticed support and wind-proof dust-suppression net, wherein, some columns are fixedly connected with latticed support, and be vertically fixed on ground, latticed support vertical is supported on the ground, and in Fig. 3, the latticed support of wind-proof device is comprised of square net 4; In Fig. 4, the latticed support of wind-proof device is comprised of parallelogram mesh 6; In Fig. 5, the latticed support of wind-proof device is comprised of regular hexagonal cell 8, but is not limited to this, and wire side profile also can be other polygon.For reducing steel using amount, the grid of latticed support can suitably strengthen.Each point of segment mesh supported by column 5,7,9 respectively.On latticed support, be fixedly coated with at least wind-proof dust-suppression net of one deck, in the larger area of dust storm, can cover bilayer or multilayer windbreak to strengthen wind-proof dust-suppression effect.Wind-proof dust-suppression net can be made as the flexible material of raw material by high density polyethylene (HDPE) and/or high density poly propylene, also can be made by rigid materials such as low carbon steel plate, galvanized sheet, color coated steel sheet, almag plate or corrosion resistant plates.The percent opening of wind-proof dust-suppression net is 20%-40%.Wherein Double-level Reticulated dust suppression rate can reach more than 95%, decay the to greatest extent kinetic energy of incoming flow wind, reduces it and plays dirt and take dirt ability, thereby reach the effect that suppresses airborne dust, comprehensive wind-screening dust-suppressing rate can reach more than 80%, as the main application material that suppresses dust pollution.The height of column exceeds latticed support 10cm.Height and wind-proof device that setting wind-proof device height is latticed support make heliostat in heliostat mirror field be subject to the anti-resultant moment of wind within the scope of drive disk assembly carrying to the distance of mirror field edge heliostat.
Embodiment bis-
As accompanying drawing 1-2, shown in 6-11, below a kind of preferred embodiment that can effectively reduce the anti-windproof method of mirror field wind provided by the invention, comprise the following steps:
S1: the heliostat area that presets solar eyepiece Jing Chang is S=19m
2, heliostat width is 4.75, be highly height H 0=2.5m, the ambient wind velocity V=14m/s of 4m, latticed support, heliostat elevation angle θ
tbe 90 degree, azimuth angle theta
zbe under the condition of 0 degree, at wind-proof device, on the distance L direction of mirror field edge heliostat, equally spaced obtain some location points, measure respectively on some location points and arrange after wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears.Draw when wind-proof device height is 2.5m, the dot matrix broken line graph that the anti-resultant moment M of wind that mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with wind-proof device, as shown in Figure 6.
While there is wind-proof device, the resultant moment of heliostat is less than 50Nm with the variation of elevation angle, and the value of heliostat resultant moment is subject to azimuthally to affect also very littlely, is all less than 50Nm.Therefore, when resultant moment size is measured, can select fixing heliostat elevation angle and azimuth.
S2: change the height of latticed support of some location points to 3m, measure respectively on some location points and arrange after wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears, when the height that draws latticed support is 3m, the dot matrix broken line graph that the anti-resultant moment M of wind that mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with wind-proof device, as shown in Figure 7.
S3: equivalent changes the height of latticed support and repeats the method in S2, and the height of measuring successively latticed support is 3.5m, 4m ... time, the anti-resultant moment M of wind that mirror field edge heliostat bears is set after wind-proof device on some location points;
The height that draws successively latticed support is 3.5m, 4m ... time, the dot matrix broken line graph that the anti-resultant moment M of wind that mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with wind-proof device, as Figure 8-9.
S41: by the anti-resultant moment M of wind that S1-S3 is obtained, the dot matrix broken line graph matching that S1-S3 is obtained obtains a width heliostat resultant moment M with the height H of latticed support, the three-dimensional resultant moment dot matrix surface chart that wind-proof device changes to edge heliostat distance L, from figure, can obtain intuitively the wind-proof device parameter that meets construction condition.
S42 obtains the anti-resultant moment M of wind that mirror field edge heliostat the bears part dot chart within the scope of drive disk assembly carrying in three-dimensional resultant moment dot chart;
S43 being according to analyzing land utilization ratio, windbreak construction cost and cleaning vehicle channel width, finds out the optimal height of latticed support and the wind-proof device optimal distance to mirror field edge heliostat in part dot chart.
For concrete heliostat size, by the way, can obtain the optimal location of wind-proof device and the optimal height of latticed support are set.In the present embodiment, consider wind-proof device construction cost, heliostat height is 4m, latticed support height is chosen between 2～4m, consider land utilization ratio, and clean the factors such as vehicle channel width, suppose that cleaning vehicle channel width is 5m, select wind-proof device isolated edge heliostat distance L should be and be greater than 5m, according to Figure 10 mean camber, for the moment that edge heliostat is born less, get the tracing analysis of L=6m place, visible tall and big during in 3m at wall, edge heliostat Moment remains unchanged substantially, so time for improve land utilization ratio, Bestgrid shape support height H is 3m, the optimal distance of isolated edge heliostat is 6m.
Above-mentioned disclosed be only specific embodiments of the invention, this embodiment is only that clearer explanation the present invention is used, and limitation of the invention not, the changes that any person skilled in the art can think of, all should drop in protection domain.
Claims (10)
1. one kind can effectively be reduced the anti-wind-proof device of mirror field wind, it is characterized in that, described wind-proof device is around being arranged on around a heliostat Jing Chang, comprise some columns, latticed support and wind-proof dust-suppression net, wherein, described some columns are fixedly connected with described latticed support, and are vertically fixed on ground, described latticed support vertical is supported on the ground, on described latticed support, be fixedly coated with at least wind-proof dust-suppression net of one deck.
2. as claimed in claim 1ly a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, it is characterized in that, the percent opening of described wind-proof dust-suppression net is 20%-40%.
3. as claimed in claim 1ly a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, it is characterized in that, the height of described column exceeds described latticed support 10cm.
4. as claimed in claim 1ly a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, it is characterized in that, described wind-proof device adopts two-layer wind-proof dust-suppression net.
5. as claimed in claim 1ly a kind ofly can effectively reduce the anti-wind-proof device of mirror field wind, it is characterized in that, set the height of described latticed support and described wind-proof device to the distance of mirror field edge heliostat, make heliostat in described heliostat mirror field be subject to the anti-resultant moment of wind within the scope of drive disk assembly carrying.
6. can effectively reduce the anti-windproof method of mirror field wind, it is characterized in that, utilize a kind of anti-wind-proof device of mirror field wind that can effectively reduce described in claim 1 to carry out windproofly, comprise the following steps:
S1: the heliostat area of default described heliostat Jing Chang is height H 0, the mean wind speed V of S, described latticed support, at described wind-proof device, on the distance L direction of mirror field edge heliostat, equally spaced obtain some location points, measure respectively on described some location points and arrange after described wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears;
S2: change the height of described latticed support of described some location points to H1, measure respectively on described some location points and arrange after described wind-proof device, the anti-resultant moment M of wind that mirror field edge heliostat bears;
S3: equivalent changes the height of described latticed support and repeats the method in S2, measuring successively wind-proof device height is H2=2H1-H0, H3=3H1-2H0, H4=4H1-3H0 ... time, the anti-resultant moment M of wind that mirror field edge heliostat bears is set after described wind-proof device on described some location points;
S4: by the anti-resultant moment M of wind that S1-S3 is obtained, relatively draw the optimal height of described latticed support and the described wind-proof device optimal distance to mirror field edge heliostat.
7. as claimed in claim 6ly a kind ofly can effectively reduce the anti-windproof method of mirror field wind, it is characterized in that, in S1, also comprise, when the height that draws described latticed support is H0, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
8. as claimed in claim 7ly a kind ofly can effectively reduce the anti-windproof method of mirror field wind, it is characterized in that, in S2, also comprise, when the height that draws described latticed support is H1, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
9. as claimed in claim 8ly a kind ofly can effectively reduce the anti-windproof method of mirror field wind, it is characterized in that, in S3, also comprise, show that successively wind-proof device height is H2=2H1-H0, H3=3H1-2H0, H4=4H1-3H0 ... time, the dot chart that the anti-resultant moment M of wind that described mirror field edge heliostat bears changes to the distance L of mirror field edge heliostat with described wind-proof device.
10. as claimed in claim 9ly a kind ofly can effectively reduce the anti-windproof method of mirror field wind, it is characterized in that, in S4, also comprise:
S41 obtains the three-dimensional resultant moment dot chart of a width by the dot chart matching that S1-S3 is obtained;
S42 obtains the anti-resultant moment M of wind that described mirror field edge heliostat the bears part dot chart within the scope of drive disk assembly carrying in described three-dimensional resultant moment dot chart;
S43 being according to analyzing land utilization ratio, windbreak construction cost and cleaning vehicle channel width, finds out the optimal height of described latticed support and the described wind-proof device optimal distance to mirror field edge heliostat in described part dot chart.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012160905A1 (en) * | 2011-05-24 | 2012-11-29 | ナブテスコ株式会社 | Solar light collecting system |
| CN203201240U (en) * | 2013-04-01 | 2013-09-18 | 江苏省交通规划设计院股份有限公司 | Double-layer wind resistant dust suppression mesh |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012160905A1 (en) * | 2011-05-24 | 2012-11-29 | ナブテスコ株式会社 | Solar light collecting system |
| CN203201240U (en) * | 2013-04-01 | 2013-09-18 | 江苏省交通规划设计院股份有限公司 | Double-layer wind resistant dust suppression mesh |
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